A tentative, testable statement about the general nature of a phenomenon is called a/an:

The organisms that contribute to biogenous sediment are chiefly algae and protozoans.

Hydrothermal vents are seafloor cold seeps with high concentrations of sulfur and salts.

Volcanic features on the ocean floor that are less than 1,000 meters (0.6 miles) tall are called:

Explain what happens to the pH of the ocean as carbon dioxide levels increase in the atmosphere.

Layers of the earth separated based on density differences.

The Earth formed around 4.6 billion years ago.

Water is the only naturally occurring substance on Earth that readily exists in all three states of matter simultaneously (ice, water, and water vapor).

Satellites measurements of the ocean surface can be used to make maps of the seafloor.

The industry most discussed is